摘要
在经连续海水组培与大田海水胁迫栽培库拉索芦荟获得的F6耐盐株系(暂定名南盐1号)的基础上,对南盐1号芦荟与库拉索芦荟进行大田海水灌溉试验,结果表明:(1)淡水灌溉下,两品种芦荟生物产量(鲜重)没有显著差异,而在30%、60%海水灌溉下,南盐1号芦荟生物产量(鲜重)均显著高于库拉索芦荟;(2)两种芦荟对海水胁迫的响应特征也不同,在30%海水灌溉下,南盐1号芦荟生物产量(鲜重)与淡水灌溉没有差异,而库拉索芦荟则显著低于淡水灌溉处理。(3)海水灌溉下两种芦荟形态特征也有明显的不同,南盐1号的株高显著高于库拉索芦荟,而叶长、叶宽与叶厚两品种间没有显著差异;南盐1号根冠比随着海水浓度的增加呈上升趋势,而库拉索芦荟在30%海水灌溉下根冠比略有下降;南盐1号30%海水灌溉下叶片表面细胞排列整齐,小突起清晰可见,60%海水处理下,表面细胞边际较清楚,气孔轮廓较清楚。库拉索芦荟,在30%海水灌溉下,表面细胞边际开始模糊,小突起明显减少,60%海水灌溉下,表面细胞边际已模糊不清,气孔结构受到严重损害。(4)在各种不同比例海水灌溉下南盐1号耐盐系数高于库拉索芦荟的耐盐系数。
Aloe Nan Yan No. 1 is a new cuhivar of aloe cultured out of the cultivar of aloe barbadensis Mill after sequential hydroponic cultivation in seawater and field cultivation under seawater stress. During the year from June 2003 to June 2004, a field experiment was conducted to make comparison in growth between Nan Yan No. 1 and aloe barbadensis Mill irrigated with seawater in Yuedong, Hainan Province. Results show that 1 ） the two cultivars were more or less the same in yield when irrigated with freshwater, but Nan Yan No. 1 was significantly higher than the other when irrigated with 30% and 60% seawater; 2） their responses to seawater stress varied between cuhivars, i.e. Nan Yan No. 1 cuhivar did not change much in yield whether irrigated with 30% seawater or fresh water, but the other dropped significantly when fresh water was replaced with 30% seawater in irrigation; 3） irrigated with seawater the two cuhivars were also significantly different in morphology or growth characteristics, e.g. Nan Yan No. 1 was much taller than the other, but they were more or less the same in length, width and thickness of leaves ; its root/shoot ratio increased with concentration of seawater in irrigation, while that of the other decreased a little bit when it was irrigated with 30% seawater; when seawater concentration in irrigation was 30% , Nan Yan No. 1 still showed orderly arrayed cells on the surface of leaves and distinct teats on the surface of cells, while the other began to lose its clear cell boundary and teats; when seawater concentration in irrigation was 60% ; cell boundaries and stomatal structure were still quite clear with Nan Yan No. 1, whereas only blurred cell boundary and damaged stomatal structure were found with the other; and 4） the two cultivar of aloe varied significantly in salt-tolerant coefficient, and Nan Yan No. 1 was always higher than the other when irrigated with seawater, regardless seawater concentration.
出处
《土壤学报》
CAS
CSCD
北大核心
2008年第4期672-677,共6页
Acta Pedologica Sinica
基金
国家海洋863计划项目(2003AA627040)资助
关键词
芦荟品种
海水灌溉
生物产量
形态特征
Aloe cultivar
Seawater irrigation
Biomass yield
Morphological characteristic
